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Upload da lima dos suportes
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Como Upload uma lima nos suportes

Para upload uma lima, a rela��o org.apache.struts.upload.FormFile � usada na aplica��o. Representa uma lima que uploaded pelo cliente, esta rela��o � usado. � a �nica classe ou rela��o no pacote do upload que referenced tipicamente diretamente por uma aplica��o dos suportes




Criando o feij�o do formul�rio

Em nosso exemplo, a classe do feij�o do formul�rio contem uma propriedade theFile, que � do tipo org.apache.struts.upload.FormFile. O seguinte exemplo � o c�digo do FormBean (StrutsUploadForm.java):

package academictutorials;

import org.apache.struts.action.*;
import org.apache.struts.upload.FormFile;

/**
* Form bean for Struts File Upload.
*
*/
public class StrutsUploadForm extends ActionForm
{
private FormFile theFile;

/**
* @return Returns the theFile.
*/
public FormFile getTheFile()
{
return theFile;
}
/**
* @param theFile The FormFile to set.
*/
public void setTheFile(FormFile theFile)
{
this.theFile = theFile;
}
}



Criando a classe da a��o

Para recuperar a refer�ncia da lima uploaded, a classe da a��o chama simplesmente () a fun��o getTheFile no objeto de FormBean. Para come�ar a lima uploaded e a sua informa��o, a refer�ncia do FormFile � usada. O seguinte � c�digo de nossa classe da a��o chamada strutsUploadAction.java:

package academictutorials;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;

/**
* Struts File Upload Action Form.
*
*/
public class StrutsUploadAction extends Action
{
public ActionForward execute(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response) throws Exception
{
StrutsUploadForm myForm = (StrutsUploadForm)form;

// Process the FormFile
FormFile myFile = myForm.getTheFile();
String contentType = myFile.getContentType();
String fileName = myFile.getFileName();
int fileSize = myFile.getFileSize();
byte[] fileData = myFile.getFileData();
System.out.println("contentType: " + contentType);
System.out.println("File Name: " + fileName);
System.out.println("File Size: " + fileSize);

return mapping.findForward("success");
}
}



Definindo o feij�o do formul�rio na lima de struts-config.xml

Na lima de struts-config.xml para definir o feij�o do formul�rio, adicionar a seguinte entrada.

<form-bean name="FileUpload" type="academictutorials.StrutsUploadForm"/>



Definindo tra�ar da a��o
Na lima de struts-config.xml, adicionar a seguinte a��o que tra�a a entrada:
<action
path="/FileUpload"
type="academictutorials.StrutsUploadAction"
name="FileUpload"
scope="request"
validate="true"
input="/pages/FileUpload.jsp">
<forward name="success" path="/pages/uploadsuccess.jsp"/>
</action>



P�gina tornando-se do jsp

O c�digo da lima do jsp (FileUpload.jsp) a upload � como segue:

<%@ taglib uri="/tags/struts-bean" prefix="bean" %>
<%@ taglib uri="/tags/struts-html" prefix="html" %>

<html:html locale="true">
<head>
<title>Struts File Upload Example</title>
<html:base/>
</head>
<body bgcolor="white">
<html:form action="/FileUpload" method="post" enctype="multipart/form-data">
<table>
<tr>
<td align="center" colspan="2">
<font size="4">Please Enter the Following Details</font>
</tr>

<tr>
<td align="left" colspan="2">
<font color="red"><html:errors/></font>
</tr>



<tr>
<td align="right">
File Name
</td>
<td align="left">
<html:file property="theFile"/> 
</td>
</tr>


<tr>
<td align="center" colspan="2">
<html:submit>Upload File</html:submit>
</td>
</tr>
</table>


</html:form>
</body>
</html:html>

Anotar que n�s ajustamos a propriedade da criptografia do formul�rio ao enctype= " multipart/dados ".

O seguinte c�digo para a p�gina do sucesso (uploadsuccess.jsp) � como segue:

<html>

<head>
<title>Success</title>
</head>

<body>

<p align="center"><font size="5" color="#000080">File Successfully Received</font></p>

</body>

</html>



Em index.jsp para chamar o formul�rio, adicionar a seguinte linha.

<li>
<html:link page="/pages/FileUpload.jsp">Struts File Upload</html:link>
<br>
Example shows you how to Upload File with Struts.
</li>



Exemplo e testar do edif�cio

Ir aos suportes \ diret�rio strutstutorial e datilografar a formiga no alerta de comando, � configura��o e desdobrar a aplica��o. Isto ajudar� desdobrar a aplica��o. Abrir o browser e datilografar a p�gina de FileUpload.jsp. Seu browser deve indicar o formul�rio do upload da lima como segue:





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